1.General
JKW5 series reactive power autocompensation controller is used for the automatic regulation forcapacitor compensation devices of low voltage distribution system (hereinafter referred to ass controller).It makes the power factor reach user's preset state, to enhance the utilization efficiency of power
transformer, reduce line loss and improve the voltage value of power supply, thereby to increase theeconomic benefit and social benefit.

2.Function characteristics
①.To calculate input-cut capacity of capacitor by reactive power, with high compensation precision.
②.High measuring precision for power factor, with wide display range.
③.Initial phase preset (software regulation synonymous end or current signal polarity).
④.With two types of control modes: power factor and reactive power.
⑤.With neighborly man machine interface, easy to operate.
⑥.Various control parameter can be adjusted through full digital display, visual and easy to use.
⑦.With two kinds of working modes: auto running and manual running.
⑧.With over voltage and under voltage protection functions.
⑨.With power down protection functions, data will not lose.
Low input impedance of current signal≤0.01Q

3.Operating conditions
①.Altitude should not exceed 2500m.
②.Ambient temperature:-25℃~+50℃
③.Air humidity should not exceed 50% at 40'℃, and not exceed 90% at 20℃
④.No corrosive gas, conductive dust and flammable medium around.No fierce vibration in installation place.


4.Rated working
Rated working voltage:          AC 380V   50Hz
Rated working current:          AC 0-5A   50Hz
Capacity of output contact:   AC 220V  7A  50Hz
Display power factor:            lag 0.001- lead 0.001
Measure reactive power:       0—9999Kvar
Under voltage protection value:  340V
Control mode:optimize automatically/input-cut circularly
SensitivityL:   60mA
Protection grade:   shellIp40


5.Characteristies ofworking modes
At any moment contro iust can work under one working mode.
Characteristics of power factor control mode: The controller has been adjusted to power factor controlmode before leaving factory. All parameters have been preset according to the reasonable mode. User iustpertorms correct connection and it will worknormaly no other operation 1s required.Characteristics of reactive power control mode: can accurately control the input-cut and zero input-cutvibration of capacitor groups. It is applied to all working environment especially the occasions with lightload and large capacity.

6. Selection of power factor control mode and reactive power control mode
Selection of the working mode of controller is separated by the different taken value of p g - 4parameter. If user adjusts the parameter within (1-12), it shows that controller works under power factormode, the value of data means the number of output loop of controller. If user adjusts the parameter within(50-5000), it shows that under reactive power control mode, the value of data means the transformationratio of total current transformer of user system.